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Finding the Fourth Proportional to 631,879.63, 872,712.86 and 424,788.35

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Solution

The fourth proportional to 631,879.63, 872,712.86 and 424,788.35 is: 586,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,879.63 : 872,712.86 = 424,788.35 : x
  2. Step 2: Convert to fraction form
    631,879.63/872,712.86 = 424,788.35/x
  3. Step 3: Cross multiply
    631,879.63x = 872,712.86 × 424,788.35
  4. Step 4: Simplify right side
    631,879.63x = 370,718,249,335.68
  5. Step 5: Solve for x
    x = 370,718,249,335.68/631,879.63
  6. Step 6: Final answer
    x = 586,691.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.